Same configuration for xserver/intel x11 driver here (I noticed this
information was missing in my first email).
I confirm that the experimental kernel doesn't seem to be affected by
the bug. Still no crash in 48h, while three crashes where obtained with
the Sid package in the same laps time (I frequently uses the suspend to
Ram on my laptop). Note that in all the cases, my crashes were detected
in gpu/drm/i915/intel_ringbuffer.c:343 (while Frederick Himpe reports a
crash in gpu/drm/i915/i915_gem.c:4190).
Raphaël
